王红星,李海勇,张希,黄智贤,邱挺

• 1:福州大学化学化工学院

摘要(Abstract)：

在间歇反应釜内,以甲醇钠为催化剂,对碳酸二甲酯与乙醇酯交换合成碳酸二乙酯反应进行了研究,考察了催化剂浓度、反应温度、乙醇与碳酸二甲酯的摩尔配比等因素对酯交换反应的影响,通过数据校正优化了实验原始数据,建立了动力学模型并进行严格的模型检验,得到了可靠的模型参数。结果表明,该反应为连串反应,中间产物为碳酸甲乙酯,反应焓分别为ΔH10=-1.595 kJ?mol-1,ΔH20=0.809 kJ?mol-1;两个反应均为可逆反应,活化能分别为Ea1+=45.633 kJ?mol-1和Ea1-=47.228 kJ?mol-1、Ea2+=55.058 kJ?mol-1和Ea2-=54.249 kJ?mol-1。

关键词(KeyWords)： 碳酸二甲酯;酯交换;甲醇钠;碳酸二乙酯;动力学

Abstract:

Keywords:

基金项目(Foundation): 福建省自然科学基金(2011J01038)

作者(Author): 王红星,李海勇,张希,黄智贤,邱挺

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